Refrigerator-door



A. C. DAVIS.

REFRIGERATOR DO0R..

APPLICATION FILED FEB. 24. 1919.

1,389,423. Patented Aug. 30, 1921.

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A. C. DAVIS.

REFRIGERATOR DOOR.

APPLICATION FILED FEB. 24, I919- Patented Aug. 30, 1921.

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APPLICATION FILED FEB. 24, ms.

Patented Aug. 30,1921

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flttoznu ALBERT CHARLES DAVIS, or BoorrLE, ENGLAND.

OFFICE.

REFRIGERATOR-DOOR.

T aZZ whomit may concern:

Be it known that I, ALBERT CHARLES 'DAvIs, a subject of the King of England, residing at 20 Morningside road, Bootle, in the county of Lancaster, England, have invented a certain new and useful Refrigera tor-Door, of which the following is a specifi cation.

This invention relates to doors or like closures of cold storage chambers, and other rooms or chambers, or receptacles, the interiors whereof it is required to insulate from the outer air; and has for its object to i provide simple means whereby a door or like closure .maybe quickly and effectively sealed to its frame or casingand also,.in some cases to a floor--when closed.

Broadly, my invention consists in the applicationto a doonor like closure, of two or more adjustably-carried jambs or battens, the adjacent ends whereof are of such shape or configuration and so co-act with we each other and with the frame or casing that, when the door is closed, and said jambs-or battens are projected, an efi'ective corner seal is obtained. I Preferably mechanism is provided whereby said jambs or-battens may be simultaneously projected or retracted, although, if desired, they and individually.

In the application of the invention to the door of a cold storage chamber or the like, I also prefer to provide means, as hereinafter described, whereby it is insured that said jambs or battens shall contact-with the insulated portion of the door, and the front or panel of the latter shall contact with its frame orcasing.

According, to one mode of embodying my invention, and in its application to a cold storage chamber of the type in common use, there are provided atthe top, bottom, and sides of a suitably insulated door, adjustable jambs or battens constructed of wood or other suitable material, each of which is articulated to a commoncentrally disposed-metal plate, bracket, or the like.

When said door is closed, by turning said central plate, bracket, or the like, through one quarter of a revolution-say, by means of a key or handle fitted on an end of a shaft or spindle extending through and operatively connected with the plate--said Application filed lebruary 24, 1919. Serial No.. 279,023.

may be actuated separately jambs or battens are respectively caused to be projected firmly against the top and sides of the door frame, and. floor.

Specification of Letters Patent. Patented Aug. 30, 1921.

By a further-preferablyreverse-move ment of the operating handle, said j ambs or battens retire from contact with the frame and floor, whereupon the door may be immediately opened; I

Theends of said jambs orbattens are of such shape or configuration, and so coact with each other and withthe door frame or casing'as to obviate the leaving ofthrough air passages at the door corners when said battens are in their operative or sealing positionsM Y V 7 As said j ambs or battens-being self adjusting-will accommodate themselves to the framing of a door, even if'such a frame be out :of truth or alinement,,the necessity for adjustable-hinges andspecial fasteners, as now 'commonly'used in connection with the doors of cold storage chambers, is ob viated.

Further, the employment of 'a fixed or loose door sill, as,sheretofore usual, is obviated.

Whilev in installationssuch as cold storage chambers-it is necessary or desirable to fit four of said adjustablejambs or battens to .adoor or like closure, it .is to be understood thatin someinstances I may pro vide two, or three, only. the sealing of the remaining sidesor side being effected in other known suitable manner.

I will further describemy invention with the aid of the accompanying sheet of explanatory drawings which illustrate the application of my invention by way. of examples only-to the door ofa cold storage chamber, nd to a ships hatch. 3 V

In said drawihgsa- I Figure 1' is a front elevation of the door and frame with a portionof the door. broken away to show the operating mechanism.

Fig. 2 a sideielevation ofthe door and frame with a portion of the door broken away. I

Fig. 3 is a sectional plan of a'portion of the door and frame drawn to an enlarged erence denote like or equivalent parts wher and ten ends shown in Figs. 4: to 6 as viewedfrom the rear side and the door removed.

Fig. 8 being a plan of the batten ends,

Fig. 9 an isometric perspective of a cor 'ner jointadapted to form a part of the door.

Fig. 10 illustrates, in section, a ships hatch provided with my improvements.

Fig. 11 is a front elevation, Fig. 12 is a plan, and Fig. 13 is a side elevationof an insulated railway van provided witha dooraccord ing to my invention.

In the several views like characters of refever they occur. I

Referring first to the door and frame construction illustrated in Figs. 1 to 5, a denotes the top, and 5,1) the sides ofv the door framing of a cold storage chamber; 0 indicates the floor. The door, which is secured to the frame by hinges d, d comprises a front panel 6 and an insulated portion 7, between which are arranged the upper horizontal jamb or batten g, the lower horizon tal batten h and the side vertical battens i, i. Said battens are articulated to a common plate j by means of the forks k, 10 rods m, m and connecting pins Z," a fork is being secured to a plate j and a rod m and a fork 76 being secured to a rod m and a batten carrying rod m Operatively connected with said plate isa spindle n. 0 (Fig. 1) indicates an angle plate which constitutes a stop for the upper vertical rod m, and thus limits the rotary motion of plate At each inner corner of the door frame there is fitted a triangular piece 9 of -woodor other suitable material.

On referring more particularly to Figs. 4 to 9 inclusive, it will be. seen that an end of one of the jambs or, battens (g in the case illustrated) has been cut longitudinally through the middleto form a lap piece 9 a wedge like projection g is also created, and the corner of said lap piece is removed, as indicated at 9 the angle at which the face of said wedge like projection "g and corner 9 of lap piece 9 is cut is 45.

The adjacent end of'another jamb or bat ten in the case illustrated) is cut longitudinally through they middle to form a lap piece 71 and alternate corners at 2' 71 are removed at an angle of 415. Said wedge piece 9 isadapted to take in the space i when said jambs or battens are in their retracted or collapsed positions. )Vhen propurpose of illustration, between the batten j ected batten g expands upwardly and batten i'laterally from the door, the two faces 9 i meeting and bearing against the corner piece of the frame, said corner piece being of length sufiicient to receive both faces, thus as said battens are designed to project only partially beyond the door, an effective corner seal is obtained. i

In Fig. 4 a line of light is shown for the 75 corner faces i and the frame corner piece 9 but it will be understood that in use these faces will be in close contact.

As illustrated in the drawings, the bat tens are in their projected positions (having been moved thereto by means of a handle or I key fitted. on one or other of the squared extremities of the plate-spindle at) extending in part beyond the insulated portion of the door and bearing respectively against the top (6, sides Z2, and corner pieces q of the frame, and the floor 0; thus the door is sealed. By a reverse movement "of the han-. dle the battens are retracted, the door being thereby unsealed and released.

In the drawings the j ambs or battens are shown fully expanded; in actual practice, however, it will rarely occur that they will reach their maximum limit of outward movement. p

19,3), denotes wedge pieces constructed of spring steel which are secured in the framing and project outwardly; corresponding passages 29 are securedin the battens into which said wedges take or engage, when 100 the battens are projected; by this means it is insured that the battens contact with the insulated portion of'the 'door and at the same time the front or panel ofthe door is brought into contact with the doorframe. 105

8 denotes suitable joint making material,

-which may be used if desired.

It will be seen from the drawings that the battens may be readily adjusted if required, or removed.

Referring now to the hatch illustrated in in Fig. 10 the mode of sealing is similar to that described with reference to the chamber door, with the exception that, in'this case, recesses t are provided in the beam u and combing respectively, into which recesses the battens are adapted to-projectI Referring now to Figs. 11 to 13, inclusive:

Extending longitudinally of the van '0 are upper and lower tracks, each of which is composed of a pair of channel irons Q0, Q0 supported by suitable brackets; between each pair of channels are placed wheeled runners Revolubly engaging with said runners as are cranks y, upper andlower cranks being coupled together by-rods a, said cranks-y are secured to the front panel 6 of the door by means of brackets Z; and on said cranks 130 g are secured arms 2, each arm beingvpiv otally connected to a handleleve hen the door is unlocked by moving said jambs or battens to their retracted, positions through the actuation of lever/L, lever 3 is pulled by the operator with the result that,

as said cranks "2 are freeto turn, the door moves bodily outward clear of its frame;

said door may then be pushed on its runners in one direction or other away from the opening.

Having now described my invention, What I claim as new, and desire to secure by Letters Patent The combination with a doorway and door therefor, of corner pieces fitted in said thereof cut away so as to doorway, battens carried by the edges, of said door, said battens having .the ends eled so as to engage the corner pieces of said doorway, and means carried by said door adapted for simultaneously moving said battens to engage walls of said doorway and the corner pieces thereof.

Dated this 7th day of January, 1919.

In witness whereof I afiix my signature in the presence of two witnesses.

ALBERT CHARLES DAVIS.

Witnesses EMILY BURNETT, ,DoRIs SMITH.

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